The word 跳动 is formed by combining two meaningful characters: 跳 (tiào), which means "to jump" or "to leap", and 动 (dòng), which means "to move" or "movement". Together, they create a compound where the first character describes a specific, springy quality of motion, and the second character provides the general concept of movement; their semantic fusion results in a new, unified idea meaning "to beat" or "to pulsate", as in a heartbeat, capturing a sense of rhythmic, repeated jumping motion.